hi there
I have two huge buddlia in my back garden and was told to prune them hard as they were getting out of control (inherited them moving into the house)
I have sawn them down to 3 foot high of trunks (tree rings indicate they are about 10 years old). however I have noticed that the roots are really loose on one tree.
Can you move a stump, to grow again next year at all??
If its loose it might suggest there is root rot or somat eating the roots. I wouldn't bother trying to move it, they strike easily from cuttings. I'm surprised you havent had loads of seedlings popping up, they can be like weeds.
I think the best time to do cuttings is autumn after leaf fall, a length of 10" should be good. Make the basal cut straight across and under a bud. The top cut should be slanted and just above a bud.
Push the cutting into the ground making sure you have 3 or 4 buds above ground.
Now if I'm wrong.....................best wait for a few more advice posts ;)
I prune mine down almost to the ground.
Look around for seedlings as Star suggested. They are always popping up.
sometimes far away from the parent. Feel the stem for ridges if you aren't sure
what it is. The loose one does sound like poss. root rot.
My mum's dog trampled on a buddlia we had just bought and totally trashed it, I just stuck the broken branches in some compost and kept it watered and 2 years on have one 6 ft buddlia (which I pruned to the ground last winter) and another one (in a much more challenging position) which is about 4 ft.
If I can manage it then it must be easy, so I would start again rather than trying to move it....
It grows in the most amazing places. Most train lines into big cities are covered in buddlia, even balancing between 2 bricks on bridges and sheer drops. It seems to be quite resilient.
We hack our Buddleia down regularly and back it comes quite happily.
Actually removing would be tricky and probably unsuccessful! Anyway the butterflies and bees love it.